Dies.



w. 1. BOYLE.

DIES.

APPLICATION FILED APR. 12. I917.

1,274,848. Patented Aug 6, 1918,

1105185385: WIIIIam J.Boy/e In ven/br r lql'l'orne PE v.

WILLIAM J. norm, or COLLINGWOOD, ONTARIO, CANADA, Assrenoaor' oN-HALrhio GARFIELDZIV. EVAN-s, or" coLL NGwooD, Q T RIoQG NADAL DIES.

Specification o f ietters Patent.

Patented Aug. 6, 1918.

Application filed April 12, 1917. Serial No. 161,488.

To all whom it may concern:

Be it known that 1, WILLIAM J. BOYLE, of the city of Collingwood,Province of Ontario, Dominion of Canada, have invented certain new anduseful Improvements in Dies; and I do hereby declare that the followingis a full, clear, and exact description thereof.

My inventionrelates particularly to dies for cutting nail points, and ithas for its object to provide dies for this purpose by which two or morenails may be cut with one pair of cutters anddies such as are usuallyemployed in nail-making machines for making only one nail per revolutionof the machine.

The invention may be said briefly to consist of a pair of co-acting diesconstructed and arranged to operate with a pair of coacting cutters themeeting ends of the dies being formed with a plurality of parallelgrooves having their ends at one side of the dies enlarged to presenthead matr ces, the grooves of the respective dies coincldlng as usual inwork of this kind. The cuttlng tools have cutting facets converging inpoints coinciding with the, axial lines of the heads. These points arelocated in one and the same cutting edge formed by one straight edge ofthe tool, facets being located intermediate of the converging facets andat the corners of the tool, and being spaced therefrom to presentclearance channels for the clippings. The converging facets are not onlycutters but form the points.

For full comprehension, however, of my invention reference must be hadto the accomlpanying drawings in which similar reference charactersindicate the same parts, and wherein:

Figure 1 is an elevation of a pair of dies and a pair of cuttersarranged with the cutters in positions assumed immediately the points ofa plurality of nails are formed and severed from the stock-wire;

Fig. 2 is a face or plan view of the heading dies showing accommodationfor three nails; and

Fig. 3 is an elevation of the cutting face of one of my improved cuttersfor simultaneously cutting a plurality of points.

There are nail-making machines in use which are designed to produce twoor more nails at each operation of the dies, but in all cases separatedies are necessary for each nail.

Referring to Fig. 1 of the drawing, the heading dies and cutters arearranged in juxtaposition and are illustrated respectively at 2 and 3.The heading dies 2 con sist of a pair of reciprocatory co-acting memberspresenting engaging faces 4 movable in opposite directions to and fromthe axial line of the stock. Each of these faces is provided with aplurality of parallel grooves 5 corresponding in number to the number ofblanks to be formed during each operation, the embodiment illustratedbeing provided with three grooves. The grooves of one die are adapted tocoincide with the grooves of the other and their lower ends are flaredto present heading matrices 7.

The cutters 3 (see Figs. 1 and 3) are located immediately beneath thedies and adapted to co-act therewith. They consist of a pair ofreciprocatory tools having movement in opposite directions to and fromthe axial line of the stock, the contacting ends of the tools beingbeveled as at 10 to present cutting faces equal in depth to the lengthof a point desired. The cutting face (see Fig. 8) of each tool is formedwith a series of pairs of cutting facets 15, each pair presentingcutting edges 16 converging in points coinciding with the axial line ofits respec tive head immediately above and in ahorizontal lineconstituted by the upper cutting edge 20 of the tool. Located betweenthe pairs 15 are triangular projections or facets 21 which are spacedtherefrom to present clearance channels 22 to prevent the clippingsjamming together. The converging edges 16 are not only cutters but formthe points also.

What I claim is as follows In a nail machine, a pair of coactinghorizontally arranged reciprocatory gripping dies adapted to grip aplurality of blanks located in the same plane; of a pair of coactingreciprocatory cutting tools located immediately beneath and extendingparallel to the said dies each. of said tools having a contacting facehaving a straight cutting edge and being formed with a series of pairsof cutting facets converging in said cutting edge, each pair beingconstructed and ar In testimony whereof I have signed my ranged to actupon one of the blanks, and name to this specification in the presenceof triangular facets located between the pairs two Witnesses.

of cutting facets and spaced therefrom 'to WILLIAM J. BOYLE.

present clearance channels for the purposev Witnesses of preventing theclippings from jamming LoIs I. KNOX, together. C. I. EVANS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of IBatents,

waenflngten, E @J

